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Peter Anvin" , Harry Yoo , Jann Horn , Lance Yang , linux-arm-kernel@lists.infradead.org, linux-trace-kernel@vger.kernel.org, Usama Arif Subject: [PATCH RFC v4 03/12] mm: rename get_user_page_vma_remote() to get_user_page_lookup_vma() Date: Fri, 24 Jul 2026 18:29:25 -0400 Message-ID: <20260724222934.1463812-4-riel@surriel.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260724222934.1463812-1-riel@surriel.com> References: <20260724222934.1463812-1-riel@surriel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 5DD0640004 X-Stat-Signature: 47jt51uesz4x6cxrbhzttpc67n7ak141 X-Rspam-User: X-HE-Tag: 1784932823-763477 X-HE-Meta: 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 3NVgM70c BKYLDfmD1l4fS6tkXek6drQWqcBlts86N5VBCUyiAAKvkvVs5jFJoZIeaidg+Ya4EZbTJJAnZgAGFqVhwdtbPu4OA5fs+XWsmsMyL/Iwrzxa5DAYuc0IwzqdziC2EUJA5VnMS0r0xKnJSwrI7/3NNBjqzrMwpfcLBZUNwIXF8D/M3llbRn+rYfCwn2qziqFVW+QoWWE0Yt+V68bjV3SGxPrGHvEvhL+sGAnd+Q1D3B2kuJzz8IlsmtlS9nme7ShOewj1BtYBTJj7G66YomcIeBEGtf2o2hoWnIaR+rXTnJK5xyn6XR0oWtUDlaB+LmHAQ7Rr6 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: get_user_page_vma_remote() faults in the page at @addr in a remote mm and also looks up the VMA that covers it, handing both back to the caller. This cleans up the namespace for adding a get_user_page_vma() variant where the caller already has the vma. No functional change intended. Assisted-by: Claude:claude-opus-4.8 Acked-by: Usama Arif Signed-off-by: Rik van Riel --- arch/arm64/kernel/mte.c | 2 +- arch/x86/kernel/uprobes.c | 2 +- include/linux/mm.h | 2 +- mm/memory.c | 4 ++-- mm/rmap.c | 2 +- 5 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c index 1a9aad6ef22a..7a6ecc3d9294 100644 --- a/arch/arm64/kernel/mte.c +++ b/arch/arm64/kernel/mte.c @@ -459,7 +459,7 @@ static int __access_remote_tags(struct mm_struct *mm, unsigned long addr, struct vm_area_struct *vma; unsigned long tags, offset; void *maddr; - struct page *page = get_user_page_vma_remote(mm, addr, + struct page *page = get_user_page_lookup_vma(mm, addr, gup_flags, &vma); struct folio *folio; diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c index 3af979fb41d3..329efac0cfb3 100644 --- a/arch/x86/kernel/uprobes.c +++ b/arch/x86/kernel/uprobes.c @@ -1036,7 +1036,7 @@ static int copy_from_vaddr(struct mm_struct *mm, unsigned long vaddr, void *dst, struct vm_area_struct *vma; struct page *page; - page = get_user_page_vma_remote(mm, vaddr, gup_flags, &vma); + page = get_user_page_lookup_vma(mm, vaddr, gup_flags, &vma); if (IS_ERR(page)) return PTR_ERR(page); uprobe_copy_from_page(page, vaddr, dst, len); diff --git a/include/linux/mm.h b/include/linux/mm.h index 485df9c2dbdd..24ead14b4790 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -3238,7 +3238,7 @@ long pin_user_pages_remote(struct mm_struct *mm, /* * Retrieves a single page alongside its VMA. Does not support FOLL_NOWAIT. */ -static inline struct page *get_user_page_vma_remote(struct mm_struct *mm, +static inline struct page *get_user_page_lookup_vma(struct mm_struct *mm, unsigned long addr, int gup_flags, struct vm_area_struct **vmap) diff --git a/mm/memory.c b/mm/memory.c index ff338c2abe92..3b86eeaf084f 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -7039,7 +7039,7 @@ static int __access_remote_vm(struct mm_struct *mm, unsigned long addr, void *maddr; struct folio *folio; struct vm_area_struct *vma = NULL; - struct page *page = get_user_page_vma_remote(mm, addr, + struct page *page = get_user_page_lookup_vma(mm, addr, gup_flags, &vma); if (IS_ERR(page)) { @@ -7167,7 +7167,7 @@ static int __copy_remote_vm_str(struct mm_struct *mm, unsigned long addr, struct page *page; struct vm_area_struct *vma = NULL; - page = get_user_page_vma_remote(mm, addr, gup_flags, &vma); + page = get_user_page_lookup_vma(mm, addr, gup_flags, &vma); if (IS_ERR(page)) { /* * Treat as a total failure for now until we decide how diff --git a/mm/rmap.c b/mm/rmap.c index 1c77d5dc06e9..b36f2e219b8f 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -2838,7 +2838,7 @@ struct page *make_device_exclusive(struct mm_struct *mm, unsigned long addr, * (non-device-exclusive) PTE and issue a MMU_NOTIFY_EXCLUSIVE. */ retry: - page = get_user_page_vma_remote(mm, addr, + page = get_user_page_lookup_vma(mm, addr, FOLL_GET | FOLL_WRITE | FOLL_SPLIT_PMD, &vma); if (IS_ERR(page)) -- 2.53.0-Meta